Lipitor is a commonly prescribed medication for high cholesterol levels. Patients may wonder if taking the medication at a different time of day will affect its effectiveness.

According to the first source [1], the patent for Lipitor expired in 2011, which means that other companies can now produce and sell generic versions of the medication. However, this source does not provide information on the timing of Lipitor administration.

The second source [2] states that statins, including Lipitor, are typically taken once a day, usually in the evening. The reason for this is that the body produces more cholesterol at night, so taking the medication before bed can be more effective in reducing cholesterol levels. However, the source also notes that Lipitor can be taken at any time of day, as long as it is taken consistently.

The third source [3] discusses a study that examined the effect of taking statins at different times of day. The study found that taking statins in the morning or at night had no significant effect on their effectiveness in reducing cholesterol levels. However, the study did find that taking statins at night was associated with a lower risk of heart attack and stroke.

In summary, while Lipitor is typically taken in the evening, it can be taken at any time of day as long as it is taken consistently. A study cited in one of the sources found that taking statins at different times of day did not significantly affect their effectiveness in reducing cholesterol levels, but taking them at night may be associated with a lower risk of heart attack and stroke. It is important for patients to follow their doctor's instructions for taking Lipitor or any other medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4799662/